Expand instances of RawThreadInfo to LegacyRawThreadInfo|MinimallyEncodedRawTheadInfo

Summary:
Context: https://linear.app/comm/issue/ENG-6366/rename-minimallyencodedrawthreadinfo-to-rawthreadinfo

RawThreadInfo was an alias for LegacyRawThreadInfo|MinimallyEncodedRawThreadInfo, but we want to remove it. As a first step we expand all usages of RawThreadInfo to LegacyRawThreadInfo|MinimallyEncodedRawThreadInfo.

Depends on D10624

Test Plan: flow

Reviewers: ashoat, ginsu, tomek

Reviewed By: tomek

Differential Revision: https://phab.comm.dev/D10625